the term Anglophone refers to an individual or nation that speaks English as a native or adopted language. The main countries which would be considered Anglophone are the United Kingdom, Canada, USA, Australia, and a few other small areas in Asia, South America, and Africa.
This term is often used in Canada, referring to the english-speaking parts of the country. Other terms frequently used are francophone and allophone.
this is a map showing the main Anglophone countries in the world.

Countries in which English is the first language of a large fraction of the population are shown in blue. Other countries with substantial adoption of English are shown in green